# -*- coding: utf-8 -*-
###############################################################################
#
#    Cybrosys Technologies Pvt. Ltd.
#
#    Copyright (C) 2023-TODAY Cybrosys Technologies(<https://www.cybrosys.com>)
#    Author: Cybrosys Techno Solutions (Contact : odoo@cybrosys.com)
#
#    You can modify it under the terms of the GNU AFFERO
#    GENERAL PUBLIC LICENSE (AGPL v3), Version 3.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU AFFERO GENERAL PUBLIC LICENSE (AGPL v3) for more details.
#
#    You should have received a copy of the GNU AFFERO GENERAL PUBLIC LICENSE
#    (AGPL v3) along with this program.
#    If not, see <http://www.gnu.org/licenses/>.
#
###############################################################################
import base64
import html2text
from odoo import models, _
from odoo.exceptions import ValidationError


class PurchaseOrder(models.Model):
    """Inherited the module for adding a button that helps to send whatsapp
        message to the customer """
    _inherit = "purchase.order"

    def action_send_by_whatsapp(self):
        """ When you click the send_by_whatsapp button, it will open a wizard
        that contain the message to send to the whatsapp web page. """
        if not self.partner_id.mobile:
            raise ValidationError(_('Add whatsapp mobile number in '
                                    'sale order partner!'))
        if not self.partner_id.mobile[0] == "+":
            raise ValidationError(_('Please add a valid mobile'
                                    'number along with a valid country code!'))
        twilio_whatsapp = (self.env["ir.config_parameter"].sudo().get_param
                           ("all_in_one_whatsapp_integration.twilio_whatsapp"))
        if not twilio_whatsapp:
            raise ValidationError(_("Please add your valid twilio"
                                    "whatsapp number in settings"))
        if twilio_whatsapp[0] != "+":
            raise ValidationError(_("Please add a valid "
                                    "twilio mobile number along with +"))
        template_id = self.env.ref("all_in_one_whatsapp_integration."
                                   "purchase_order_whatsapp_template").id
        mail_template_values = (
            self.env["mail.template"]
            .with_context(tpl_partners_only=True)
            .browse(template_id)
            .generate_email([self.id], fields=["body_html"]))
        body_html = dict(mail_template_values)[self.id].pop("body_html", "")
        whatsapp_message = html2text.html2text(body_html)
        report = self.env["ir.actions.report"]._render_qweb_pdf(
            "purchase.action_report_purchase_order", self.id)
        report_attachment = self.env["ir.attachment"].sudo().create({
            "name": "Purchase Report",
            "type": "binary",
            "datas": base64.b64encode(report[0]),
            "store_fname": base64.b64encode(report[0]),
            "mimetype": "application/pdf",
            "res_model": "purchase.order",
        })
        return {
            "type": "ir.actions.act_window",
            "name": _("Whatsapp Message"),
            "res_model": "send.whatsapp.message",
            "target": "new",
            "view_mode": "form",
            "view_type": "form",
            "context": {
                "default_whatsapp_message": whatsapp_message,
                "default_attachment_ids": [(4, report_attachment.id)],
            },
        }